CONTRAST SENSITIVITY AND VISUAL-ACUITY IN PATIENTS WITH EARLY CATARACTS
CONTRAST SENSITIVITY AND VISUAL-ACUITY IN PATIENTS WITH EARLY CATARACTS
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DOI：
10.1016/s0886-3350(13)80313-6
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发表时间：
1993-05-01
影响因子：
2.8
通讯作者：
FRIEND, J
中科院分区：
文献类型：
--
作者：
CHYLACK, LT;JAKUBICZ, G;FRIEND, J
在188例早期白内障或核褐变的非糖尿病患者中，我们评估了对比敏感度函数（CSF）比高对比度视力测量提供更多关于患者视力残疾的信息的程度。收集的数据包括LOCS II白内障分类、Bailey-Lovie视力（LogMAR评分）、Lotmar干涉视力（LI VA）和使用Vistech 6500的距离对比敏感度函数（CSF）。广义最小二乘回归模型，其中CS是因变量，LogMAR评分或LI VA是自变量，用于确定CSF是否提供了LogMAR评分或LI VA提供的有关视力残疾的额外信息。对比敏感度功能下降，只有核乳光在高频率（12至18 cpd），所有其他类型的白内障和核颜色，CSF测试提供更多的信息白内障相关的视力丧失比LI VA或LogMAR评分。在早期白内障患者中使用Vistech 6500系统测量CSF提供了关于视觉功能障碍的信息，这些信息超出了仅在核乳光患者中通过LogMAR评分或LI VA提供的信息，并且可能没有临床意义。
In a population of 188 nondiabetic patients with early cataracts or nuclear brunescence, we assessed the degree to which contrast sensitivity function (CSF) provided more information about a patient's visual disability than high contrast visual acuity measurements. Data collected included LOCS II cataract classification, Bailey-Lovie visual acuity (LogMAR score), Lotmar interferometric visual acuity (LI VA), and distance contrast sensitivity function (CSF) using the Vistech 6500. Generalized least squares regression models in which CS was the dependent variable and either LogMAR score or LI VA was among the independent variables were used to ascertain whether CSF provided additional information about visual disability to that provided by LogMAR score or LI VA. Contrast sensitivity function was decreased only by nuclear opalescence at high frequencies (1 2 to 18 cpd); for all other cataract types and nuclear color, CSF testing provided no more information about cataract-related visual loss than LI VA or LogMAR score. Measurement of CSF using the Vistech 6500 system in patients with early cataracts provides information on visual dysfunction beyond that provided by LogMAR score or LI VA only in patients with nuclear opalescence, and that may not be clinically significant.